Clinical and Anatomical Factors Influencing Accuracy in Fully Guided Implant Placement.

Edentulous Mouth Clinical Trial

Official title: Clinical and Anatomical Factors Influencing Accuracy in Fully Guided Implant Placement

Status Recruiting

Clinical Trial Summary

The importance of the stability of hard and soft tissues has been shown to be of paramount importance for long-term implant success. To reach optimal functional and aesthetic outcomes, implant placement must be planned accordingly to prosthetic needs and design. Prosthetically driven implant placement is based on a diagnostic prosthetic set-up that is followed by precise implant planification and placement using CBCT and intraoral scanning.

The aim of this research is to evaluate how the clinical and anatomical factors can influence the 3D position of guided surgery.

Clinical Trial Description

After assessing the fulfillment of the inclusion criteria, pre-operative cone beam computed tomography (CBCT) (Newtom, Cefla S.C.) and intraoral digital impressions (Trios®, 3Shape Dental Systems, Denmark) will be obtained for each patient to achieve a digital wax-up and a presurgical plan for the exact position of the implants by a single calibrated operator (RP).

Every patient could have a maximum of four implants to be placed (one per quadrant), in those cases, each implant will be placed with its own surgical guide.

The digital imaging and communications in medicine (DICOM) files will be imported to a guided-surgery planning software (Codiagnostix, Dental wings) to perform an implant planning based on the digital wax up; in this step the assessment of the mucosal thickness will be performed using the STL and the DICOM files superimposed. The measurement will be taken from the crestal bone until the soft tissue surface (mm).

Furthermore, a surgical guide will be designed, and 3D printed (SprintRay Pro S; SprintRay Inc) with implant guide resin (SprintRay EU Surgical Guide Clear; SprintRay Inc) by RP for the surgical procedure, supported by the whole dental arch, and reinforced with one bar across the arch.

Through guided surgery, previously planned and designed based on CBCT study and CAD/CAM scanning, placement of Conelog Progressive line implants (Biohorizons Camlog, Iberia) will be performed in maxilla or mandibula in a one stage surgery by a 8 years' experience operator (GB).

Implant placement will be fully guided and a postoperative CBCT in ECO mode (35μSv) will be taken after the implant placement to assess the final position.

Both CBCT will be aligned (pre-op scan and post-op scan) to make calculations by a single evaluator (AB) included the following: (1) angle: angle deviation measured in degrees; (2) base: deviation at implant shoulder in millimeters; (3) tip: deviation at implant apex in millimeters; (4) 3D offset: global deviation in 3D directions in millimeters; (5) mesiodistal deviation in millimeters: (+) deviated to the distal direction and (-) deviated to the mesial direction; (6) buccolingual deviation in millimeters: direction: (+) deviated to lingual direction and (-) deviated to buccal direction; and (7) apicocoronally deviation in millimeters: direction: ( +) deviated in the apical direction. and (-) deviated in the coronal direction. ;

Related Conditions & MeSH terms

• Edentulous Mouth
• Mouth, Edentulous

• NCT number: NCT06255522
• Study type: Interventional
• Source: Universitat Internacional de Catalunya
• Contact: Marta Valles, DDS, MSc, PhD
• Phone: +34619747903
• Email: mvalles@uic.es
• Status: Recruiting
• Phase: N/A
• Start date: March 1, 2024
• Completion date: November 30, 2024